JPH0410502B2 - - Google Patents
Info
- Publication number
- JPH0410502B2 JPH0410502B2 JP57217537A JP21753782A JPH0410502B2 JP H0410502 B2 JPH0410502 B2 JP H0410502B2 JP 57217537 A JP57217537 A JP 57217537A JP 21753782 A JP21753782 A JP 21753782A JP H0410502 B2 JPH0410502 B2 JP H0410502B2
- Authority
- JP
- Japan
- Prior art keywords
- polyurethane foam
- ethylene oxide
- hydrophilic
- oxide gas
- treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 37
- 239000011496 polyurethane foam Substances 0.000 claims description 37
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229920005862 polyol Polymers 0.000 description 6
- 150000003077 polyols Chemical class 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000004721 Polyphenylene oxide Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229920000570 polyether Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は、ポリウレタンフオームを製造した後
に、その骨格表面をエチレンオキサイドガスで処
理し、表面で化学反応を起こさせることによつ
て、親水性が付与された親水性ポリウレタンフオ
ームを製造する方法に関する。Detailed Description of the Invention (Industrial Application Field) The present invention provides hydrophilic properties by producing a polyurethane foam and then treating its skeletal surface with ethylene oxide gas to cause a chemical reaction on the surface. The present invention relates to a method for producing a hydrophilic polyurethane foam provided with.
(従来の技術)
従来より親水性ポリウレタンフオームは存在し
ていたが、それらは特殊なポリオールを使用する
ことによつて親水性を付与したものであつた。具
体的にはエチレンオキサイドを開環重合して作ら
れたポリエーテルポリオールを用いたポリエーテ
ル系のポリウレタンフオームである。(Prior Art) Hydrophilic polyurethane foams have hitherto existed, but they have been rendered hydrophilic by using special polyols. Specifically, it is a polyether-based polyurethane foam using polyether polyol made by ring-opening polymerization of ethylene oxide.
(発明が解決しようとする課題)
しかし、その特殊なポリオールは結晶性が強
く、軟質ポリウレタンフオームの製造に適した高
分子量のものは、常温では固体であり、そのポリ
オールを用いてワンシヨツト法でポリウレタンフ
オームを製造することは困難であつた。故に現在
製造されている親水性ポリウレタンフオームは、
プレポリマー法によつて製造されたもの、もしく
はエチレンオキサイドが70%以下のポリオールを
用いたものである。よつて、コストが高かつた
り、親水性が十分でないという欠点や、使用可能
なポリオールが限定されるために、ポリウレタン
フオームの諸性質も限定されるという欠点があ
る。(Problem to be solved by the invention) However, the special polyol has strong crystallinity, and those with high molecular weight suitable for manufacturing flexible polyurethane foam are solid at room temperature. The foam was difficult to manufacture. Therefore, the hydrophilic polyurethane foams currently manufactured are
Those manufactured by the prepolymer method or those using polyols containing 70% or less of ethylene oxide. Therefore, there are drawbacks such as high cost and insufficient hydrophilicity, and because the polyols that can be used are limited, the properties of the polyurethane foam are also limited.
そこで本発明は、使用可能なポリオールが限定
されることから親水性ポリウレタンフオームの諸
性質も限定されるという従来技術の欠点を改善し
た、親水性ポリウレタンフオームの製造方法を提
供せんとするものである。 Therefore, the present invention aims to provide a method for producing a hydrophilic polyurethane foam that improves the drawbacks of the prior art in that the properties of the hydrophilic polyurethane foam are also limited because the usable polyols are limited. .
(課題を解決するための手段)
本発明は、ポリウレタンフオームの製造後に、
その骨格表面にエチレンオキサイドガスによる処
理をほどこすことによつて、ポリウレタンフオー
ムに親水性を付与することを特徴とする。(Means for Solving the Problems) The present invention provides that after manufacturing polyurethane foam,
It is characterized by imparting hydrophilicity to the polyurethane foam by treating the surface of its skeleton with ethylene oxide gas.
(作用)
本発明でいうポリウレタンフオームは、連通気
泡の軟質ポリウレタンフオームであればポリエー
テル系でも、ポリエステル系でもよく、その密
度、セルサイズには制限はない。(Function) The polyurethane foam referred to in the present invention may be polyether-based or polyester-based as long as it is an open-cell flexible polyurethane foam, and there are no restrictions on its density or cell size.
本発明においてポリウレタンフオームの骨格表
面を処理するエチレンオキサイドガスは、次のよ
うな反応を起こす。 In the present invention, the ethylene oxide gas used to treat the surface of the polyurethane foam skeleton causes the following reaction.
上記の反応によつて、ポリウレタンフオームの
分子鎖に、親水性の水酸基が出来、ポリウレタン
フオームの骨格表面が親水性となつて、親水性ポ
リウレタンフオームが作られる。エチレンオキサ
イドガスは、爆発性のきわめて高い危険な気体で
あるので、実際に使用する場合は、CO2などで10
〜30%の濃度に希釈して使用するのが適当であ
る。又、温度は20℃〜80℃、圧力は1atm〜
1.5atm、ポリウレタンフオームの骨格表面を処
理する時間は2時間〜24時間程度が適当である。
なおその処理は、ポリウレタンフオームを前記の
濃度、温度、圧力のエチレンオキサイドガス中に
所定時間置くことにより容易に行うことができ
る。 Through the above reaction, hydrophilic hydroxyl groups are formed in the molecular chains of the polyurethane foam, and the skeletal surface of the polyurethane foam becomes hydrophilic, producing a hydrophilic polyurethane foam. Ethylene oxide gas is a highly explosive and dangerous gas, so when actually using it, it must be heated with CO2 etc.
It is appropriate to use it diluted to a concentration of ~30%. Also, the temperature is 20℃~80℃, the pressure is 1atm~
1.5 atm, and the appropriate time for treating the surface of the polyurethane foam skeleton is about 2 hours to 24 hours.
This treatment can be easily carried out by placing the polyurethane foam in ethylene oxide gas at the concentration, temperature, and pressure described above for a predetermined period of time.
(実施例) 以下本発明の実施例について説明する。(Example) Examples of the present invention will be described below.
エチレンオキサイドガス20%、二酸化炭素80%
の混合ガスを60℃、1.2atmとして調製する。一
方、所定配合で製造した二種類のポリウレタンフ
オームA,Bを各々オートクレーブに収容し、そ
のオートクレーブ内を60Torrまで減圧する。そ
してそのオートクレーブ内に前記混合ガスを入れ
て、12時間そのままにした後ポリウレタンフオー
ムを取り出し、そのポリウレタンフオームに空気
を吹き付けてポリウレタンフオーム内のガスを除
去して親水性ポリウレタンフオームを製造した。 20% ethylene oxide gas, 80% carbon dioxide
Prepare a mixed gas at 60℃ and 1.2atm. On the other hand, two types of polyurethane foams A and B manufactured with predetermined compositions were each placed in an autoclave, and the pressure inside the autoclave was reduced to 60 Torr. Then, the mixed gas was put into the autoclave, and after leaving it as it was for 12 hours, the polyurethane foam was taken out, and air was blown onto the polyurethane foam to remove the gas inside the polyurethane foam to produce a hydrophilic polyurethane foam.
前記実施例の方法で製造した親水性ポリウレタ
ンフオームと、エチレンオキサイドガス処理をほ
どこす前のポリウレタンフオームとを20mm×20mm
×10mmの大きさにして各々水に浮かべ、水没まで
に要する時間の変化を測定することにより、エチ
レンオキサイドガス処理による親水性付与の効果
を評価した。 The hydrophilic polyurethane foam produced by the method of the above example and the polyurethane foam before being subjected to ethylene oxide gas treatment were separated into 20 mm x 20 mm.
The effect of imparting hydrophilicity by ethylene oxide gas treatment was evaluated by floating each sample in water with a size of 10 mm and measuring the change in time required until submersion.
・ ポリウレタンフオームAの水没までの時間
処理前 2分12秒 処理後 3秒
・ ポリウレタンフオームBの水没までの時間
処理前 1時間以上 処理後 1分15秒
この結果から、エチレンオキサイドガスによる
処理によつて、ポリウレタンフオームの親水性が
大幅に増大するのがわかる。・ Time for polyurethane foam A to submerge in water Before treatment 2 minutes 12 seconds After treatment 3 seconds ・ Time for polyurethane foam B to submerge in water Before treatment 1 hour or more After treatment 1 minute 15 seconds From these results, it can be seen that treatment with ethylene oxide gas It can be seen that the hydrophilicity of the polyurethane foam increases significantly.
(発明の効果)
本発明は、前記のようにポリウレタンフオーム
の製造後に、エチレンオキサイドガスによる後処
理をほどこすことによつて親水性の高いポリウレ
タンフオームを製造するものであるため、使用す
るポリウレタンフオームに制限はなく、その制限
によるポリウレタンフオーム自体の諸性質も制約
を受けることがない。しかもきわめて簡単に親水
性ポリウレタンフオームを製造できる利点もあ
る。(Effects of the Invention) The present invention produces a highly hydrophilic polyurethane foam by post-processing with ethylene oxide gas after producing the polyurethane foam as described above. There is no restriction on the properties of the polyurethane foam itself. Moreover, it has the advantage that hydrophilic polyurethane foam can be produced extremely easily.
Claims (1)
表面にエチレンオキサイドガスによる処理をほど
こすことによつて、ポリウレタンフオームに親水
性を付与することを特徴とする親水性ポリウレタ
ンフオームの製造方法。1. A method for producing a hydrophilic polyurethane foam, which comprises imparting hydrophilicity to the polyurethane foam by treating the skeletal surface of the polyurethane foam with ethylene oxide gas after the polyurethane foam is produced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21753782A JPS59108042A (en) | 1982-12-10 | 1982-12-10 | Production of hydrophilic urethane foam |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21753782A JPS59108042A (en) | 1982-12-10 | 1982-12-10 | Production of hydrophilic urethane foam |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59108042A JPS59108042A (en) | 1984-06-22 |
JPH0410502B2 true JPH0410502B2 (en) | 1992-02-25 |
Family
ID=16705801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21753782A Granted JPS59108042A (en) | 1982-12-10 | 1982-12-10 | Production of hydrophilic urethane foam |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59108042A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110408073A (en) * | 2019-08-28 | 2019-11-05 | 广东中良环保工程有限公司 | A kind of surface treatment method of foamed material |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54161674A (en) * | 1978-06-12 | 1979-12-21 | Bridgestone Corp | Production of hydrophilic synthetic resin foam |
JPS5516003A (en) * | 1978-06-26 | 1980-02-04 | Agency Of Ind Science & Technol | Production of molding of vinyl chloride resin |
JPS5722691A (en) * | 1980-07-17 | 1982-02-05 | Sekisui Chem Co Ltd | Carrier particle for tissue culture |
-
1982
- 1982-12-10 JP JP21753782A patent/JPS59108042A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54161674A (en) * | 1978-06-12 | 1979-12-21 | Bridgestone Corp | Production of hydrophilic synthetic resin foam |
JPS5516003A (en) * | 1978-06-26 | 1980-02-04 | Agency Of Ind Science & Technol | Production of molding of vinyl chloride resin |
JPS5722691A (en) * | 1980-07-17 | 1982-02-05 | Sekisui Chem Co Ltd | Carrier particle for tissue culture |
Also Published As
Publication number | Publication date |
---|---|
JPS59108042A (en) | 1984-06-22 |
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